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https://www.readbyqxmd.com/read/28532029/surfactin-loaded-polyvinyl-alcohol-pva-nanofibers-alters-adhesion-of-listeria-monocytogenes-to-polystyrene
#1
J J Ahire, D D Robertson, A J van Reenen, L M T Dicks
Surfactin-loaded polyvinyl alcohol (PVA) nanofibers were spun using gravity electrospinning. Scanning electron microscopy (SEM) images showed that nanofibers spun with surfactin are free from bead formation and uniform in diameter. The average nanofiber diameters were decreased (273±39nm, 259±39nm and 217±33nm) with increasing levels of surfactin (0.5, 1.0 and 1.5%, w/v) into PVA (10%, w/v). The 10% (w/v) PVA had average fiber diameter of 303±33nm. Atomic force microscopy (AFM) analysis showed that fibers spun with surfactin are not smooth as PVA fibers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530395/rapid-detection-of-prosthetic-joint-infection-based-on-magnetically-assisted-surface-enhanced-raman-spectroscopy-ma-sers
#2
Ariana Fargasova, Anna Balzerova, Robert Prucek, Miroslava Htoutou Sedláková, Katerina Bogdanova, Jiri Gallo, Milan Kolar, Vaclav Ranc, Radek Zboril
Accurate and rapid diagnosis of prosthetic joint infection (PJI) is vital for rational and effective therapeutic management of this condition. Several diagnostic strategies have been developed for discriminating between infected and non-infected cases. However, none of them can reliably diagnose the whole spectrum of clinical presentations of PJI. Here we report a new method for PJI detection based on magnetically assisted surface enhanced Raman spectroscopy (MA-SERS) using streptavidin-modified magnetic nanoparticles (MNP@Strep) whose surface is functionalized with suitable biotinylated antibodies and then coated with silver nanoparticles by self-assembly...
May 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28530256/can-the-onset-of-orbital-cancer-be-the-result-of-a-prosthetic-eye
#3
A Croce, V Mastronardi, M Laus, E Festa Kotelnikova
Orbital exenteration is a disfiguring procedure performed for unresponsive orbital infections and control of recurrent benign tumours and malignancies arising from the eyelids (basal cell carcinoma, squamous cell carcinoma, conjunctival malignant melanoma), lachrymal glands (adenoid cystic carcinoma) or surrounding sinuses. In extremely rare cases the use of a prosthetic eye after enucleation can lead to anophthalmic socket tumours. We report the case of a 54-year-old man who had left eye enucleation due to recurring events of retinal detachment and who developed an invasive fast growing epidermoid carcinoma 30 years later...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28530122/low-pacemaker-incidence-with-continuous-sutured-valves-a-retrospective-analysis
#4
Lars Niclauss, Dominique Delay, Raymond Pfister, Sebastien Colombier, Matthias Kirsch, René Prêtre
Background Permanent pacemaker implantation after surgical aortic valve replacement depends on patient selection and risk factors for conduction disorders. We aimed to identify risk criteria and obtain a selected group comparable to patients assigned to transcatheter aortic valve implantation. Methods Isolated sutured aortic valve replacements in 994 patients treated from 2007 to 2015 were reviewed. Demographics, hospital stay, preexisting conduction disorders, surgical technique, and etiology in patients with and without permanent pacemaker implantation were compared...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28529868/bone-inflammation-bone-infection-and-dental-implants-failure-histological-and-cytological-aspects-related-to-cement-excess
#5
Marco Tatullo, Massimo Marrelli, Filiberto Mastrangelo, Enrico Gherlone
Background: Dental implant failure can recognize several causes and many of them are quite preventable with the right knowledge of some clinical critical factors. Aim of this paper is to investigate about the histological aspects related to dental implants failure in such cases related to cement excess, how such histological picture can increase the risk of bacterial infections and how the different type of cement can interact with osteoblasts in-vitro. Methods: We randomly selected 5 patients with a diagnosis of dental implant failure requiring to be surgically removed: in all patients was observed an excess of dental cement around the failed implants...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28529867/efficacy-of-antibiotic-suppressive-therapy-in-patients-with-a-prosthetic-joint-infection
#6
Marjan Wouthuyzen-Bakker, Jasperina M Nijman, Greetje A Kampinga, Sander van Assen, Paul C Jutte
Introduction: For chronic prosthetic joint infections (PJI), complete removal of the infected prosthesis is necessary in order to cure the infection. Unfortunately, a subgroup of patients is not able to undergo a revision surgery due to high surgical risk. Alternatively, these patients can be treated with antibiotic suppressive therapy (AST) to suppress the infection. Aim: To evaluate the efficacy and tolerability of AST. Methods: We retrospectively collected data (period 2009-2015) from patients with a PJI (of hip, knee or shoulder) who were treated with AST at the University Medical Center Groningen, the Netherlands...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28529860/use-of-chlorhexidine-preparations-in-total-joint-arthroplasty
#7
REVIEW
Jaiben George, Alison K Klika, Carlos A Higuera
Prosthetic joint infection (PJI) is a serious complication after total joint arthroplasty (TJA). Chlorhexidine is a widely used antiseptic because of its rapid and persistent action. It is well tolerated and available in different formulations at various concentrations. Chlorhexidine can be used for pre-operative skin cleansing, surgical site preparation, hand antisepsis of the surgical team and intra-articular irrigation of infected joints. The optimal intra-articular concentration of chlorhexidine gluconate in irrigation solution is 2%, to provide a persistent decrease in biofilm formation, though cytotoxicity might be an issue...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28529343/excellent-auc-for-joint-fluid-cytology-in-the-detection-exclusion-of-hip-and-knee-prosthetic-joint-infection
#8
Jiri Gallo, Jarmila Juranova, Michal Svoboda, Jana Zapletalova
BACKGROUND AND AIM: The aim of this study was to evaluate the characteristics of synovial fluid (SF) white cell count (SWCC) and neutrophil/lymphocyte percentage in the diagnosis of prosthetic joint infection (PJI) for particular threshold values. METHODS AND RESULTS: This was a prospective study of 391 patients in whom SF specimens were collected before total joint replacement revisions. SF was aspirated before joint capsule incision. The PJI diagnosis was based only on non-SF data...
May 15, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28529089/kinetics-of-biofilm-formation-by-staphylococcus-lugdunensis-strains-in-bone-and-joint-infections
#9
Xavier Argemi, Gilles Prévost, Philippe Riegel, Christian Provot, Stéphanie Badel-Berchoux, François Jehl, Elodie Olivares, Yves Hansmann
OBJECTIVE: To describe the clinical presentation and 1-year follow-up of patients with bone and joint infections (BJIs) caused by Staphylococcus lugdunensis and evaluate its biofilm-forming capacities. PATIENTS AND METHODS: Overall, 28 patients with BJIs from VISLISI clinical trials were included. We evaluated 1-year clinical follow-up and analyzed biofilm production kinetics of the 28 strains using the BioFilm Ring Test®. RESULTS: Of all patients, 12 had osteoarticular infections without material and 16 had prosthetic joint infections, of which 9 underwent a 1-stage revision procedure...
May 12, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28529013/bipolar-fresh-total-osteochondral-allograft-in-the-ankle-is-it-a-successful-long-term-solution
#10
S Giannini, A Mazzotti, F Vannini
INTRODUCTION: Severe post-traumatic ankle arthritis poses a reconstructive challenge in young and active patients. Although technically demanding and despite unsolved immunological issues, bipolar fresh total osteochondral allograft (BFTOA) represent an intriguing option to arthrodesis and prosthetic replacement. The purpose of this paper is to evaluate the outcomes of a series of 48 ankle BFTOA at 10 years follow up and to investigate the rate of survival long term. METHODS: 58 patients underwent BFTOA, of these 48 were available for follow up...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28528191/subcutaneous-implant-breast-reconstruction-time-to-reconsider
#11
REVIEW
M-K Tasoulis, F M Iqbal, S Cawthorn, F MacNeill, R Vidya
Improvements in breast surgery techniques such as skin and nipple preserving mastectomy and innovative prosthetics (implants, acellular dermal matrices and meshes) is renewing interest in subcutaneous (pre-pectoral) implant reconstruction. The aim of this paper is to review the current literature in an attempt to provide a rationale that may support a return to subcutaneous implant placement, so minimising the pain and functional problems resulting from submuscular breast reconstruction.
May 4, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28526923/focal-articular-prosthetic-resurfacing-for-the-treatment-of-full-thickness-articular-cartilage-defects-in-the-knee-12-year-follow-up-of-two-cases-and-review-of-the-literature
#12
C Becher, E B Cantiller
INTRODUCTION: The rationale of focal articular prosthetic resurfacing used as a primary arthroplasty procedure in the treatment of articular cartilage defects is still under debate. Conflicting reports raise concern about high rates of re-operations and continued development of osteoarthritis, while others have reported good outcomes. The goal of this paper is to present the long-term results of two patients with a 12-year follow-up and to report the results of a literature review. MATERIALS AND METHODS: Two patients (male, 70 years; female 63 years) with a follow-up of 12 years were reviewed...
May 19, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28526565/efficacy-of-indefinite-chronic-oral-antimicrobial-suppression-for-prosthetic-joint-infection-in-the-elderly-a-comparative-study
#13
V Prendki, P Sergent, A Barrelet, E Oziol, E Beretti, M Berlioz-Thibal, F Bouchand, F Dauchy, E Forestier, G Gavazzi, C Ronde-Oustau, J Stirnemann, A Dinh
OBJECTIVES: During prosthetic joint infection (PJI), surgical management is sometimes impossible, indefinite chronic oral antimicrobial suppression (ICOAS) may sometimes be the only option. We evaluated the outcome of elderly patients who benefited from ICOAS for a strictly palliative goal METHODS: We performed a national retrospective cohort study in France of patients aged >75years old with PJI, and managed with ICOAS planned for life long from 2009 to 2014, and compared the population with an event versus the population free of event...
May 16, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#14
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28525524/easy-placement-of-annular-sutures-during-minimally-invasive-aortic-valve-replacement
#15
Toshinori Totsugawa, Arudo Hiraoka, Kentaro Tamura, Hidenori Yoshitaka, Taichi Sakaguchi
Placing annular sutures at the right coronary cusp is difficult during minimally invasive aortic valve replacement. We propose the partial everting mattress method, whereby a prosthetic valve is implanted in a supra-annular position at the left coronary and noncoronary cusps, with pledgets on the left ventricular side, but in an intra-annular position at the right coronary cusp, with pledgets on the aortic side. Needles can be grasped in forehand pass at all three coronary cusps. Our method enables easy placement of annular stitches even in the small surgical field, without adversely influencing the hemodynamic performance of the prosthesis...
May 18, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28523324/anatomical-features-and-prosthetic-considerations-of-edentulous-patients-with-mandibular-reconstruction-with-autograft-performed-more-than-40-years-ago
#16
Cătălina Murariu-Măgureanu, Cristina Teodora Preoteasa, Laura Iosif, Marina Imre, Marian Cuculescu, Elena Preoteasa
In this manuscript there are presented two cases, both with mandibular reconstruction with autograft harvested from the iliac crest, performed more than 40 years ago, but with different bone defect etiology, i.e., mandibular dysplasia and mandibular fracture, both having currently extensive tooth loss in the mandible, being in need for prosthetic rehabilitation. These cases confirm that reconstructive surgery of mandibular bone defects with autograft from iliac crest has a satisfactory long-term outcome, providing acceptable conditions for prosthetic rehabilitation...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28523276/improving-the-robustness-of-real-time-myoelectric-pattern-recognition-against-arm-position-changes-in-transradial-amputees
#17
Yanjuan Geng, Oluwarotimi Williams Samuel, Yue Wei, Guanglin Li
Previous studies have showed that arm position variations would significantly degrade the classification performance of myoelectric pattern-recognition-based prosthetic control, and the cascade classifier (CC) and multiposition classifier (MPC) have been proposed to minimize such degradation in offline scenarios. However, it remains unknown whether these proposed approaches could also perform well in the clinical use of a multifunctional prosthesis control. In this study, the online effect of arm position variation on motion identification was evaluated by using a motion-test environment (MTE) developed to mimic the real-time control of myoelectric prostheses...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28522245/pin-site-complications-associated-with-computer-assisted-navigation-in-hip-and-knee-arthroplasty
#18
Eli Kamara, Zachary P Berliner, Matthew S Hepinstall, H John Cooper
BACKGROUND: There has been a great increase in the use of navigation technology in joint arthroplasty. In most types of navigation-assisted surgery, several temporary navigation pins are placed in the patient. Goals of this study are (1) to identify complications and (2) risk factors associated with placement of these pins. METHODS: This is a retrospective cohort study of all navigation-assisted hip and knee arthroplasty performed a single institution over a 3-year period...
April 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28522189/preoperative-joint-aspiration-in-the-diagnosis-of-non-acute-hip-and-knee-prosthetic-joint-infections
#19
A Bicart-See, J Lourtet, C Delpierre, C Livideanu, T Pollon, J Remi, M P Felice, G Giordano, E Bonnet
No abstract text is available yet for this article.
May 15, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28521711/mini-heme-proteins-designability-of-structure-and-diversity-of-functions
#20
Jagdish Rai
Natural heme proteins may have heme bound to poly-peptide chain as a cofactor via non-covalent forces or heme as a prosthetic group may be covalently bound to the proteins. Nature has used porphyrins in diverse functions like electron transfer, oxidation, reduction, ligand binding, photosynthesis, signaling, etc. by modulating its properties through diverse protein matrices. Synthetic chemists have tried to utilize these molecules in equally diverse industrial and medical applications due to their versatile electro-chemical and optical properties...
May 15, 2017: Current Protein & Peptide Science
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